AP BIOLOGY

Detailed explanation-1: -Pyruvic acid can be made from glucose through glycolysis, converted back to carbohydrates (such as glucose) via gluconeogenesis, or to fatty acids through a reaction with acetyl-CoA. It can also be used to construct the amino acid alanine and can be converted into ethanol or lactic acid via fermentation.

Detailed explanation-2: -Pyruvic acid is the end product of glycolysis.

Detailed explanation-3: -In eukaryotic cells, the pyruvate molecules produced at the end of glycolysis are transported into mitochondria, which are the sites of cellular respiration. There, pyruvate will be transformed into an acetyl group that will be picked up and activated by a carrier compound called coenzyme A (CoA).

Detailed explanation-4: -Pyruvic acid, the simplest -ketoacid, plays a central role in sugar metabolism. It is the product of glycolysis, the anaerobic decomposition of glucose. In muscle, it is reduced to lactic acid during exertion.

Detailed explanation-5: -Glycolysis is a linear metabolic pathway of enzyme-catalyzed reactions that converts glucose into two molecules of pyruvate in the presence of oxygen or two molecules of lactate in the absence of oxygen.